Idk. 430 - 440 fps is a LOT different (less) than a 1200 fps bullet. And if it hits bone, would it be deflected away from vital organs, assuming it was aimed at any to begin with. On the other hand, is 430 fps enough to take down a deer (I'm no hunter)? How do they go down? I highly doubt all crossbow shots hit the heart. Do they die mostly from blood loss? Sounds pretty painful, tbh. I have no idea how quickly death would come. I'd surmise that there would be a great deal of pain while waiting on death, though. Seems pretty brutal, tbh.